# Widal Test Kit 4 × 5 ml – Stained Antigen Agglutination Kit # Swemed Widal Test Kit 4 × 5 ml The **Swemed Widal Test Kit 4 × 5 ml** is a professional **serology reagent kit** containing stained Salmonella antigen suspensions for the detection of antibodies associated with enteric fever investigations. The kit is designed for **slide and tube agglutination methods** and is intended for use with **serum samples** in pathology laboratories, diagnostic centres, hospitals and other qualified clinical laboratories. Swemed lists the Widal kit in **4 × 5 ml and 8 × 5 ml presentations**, with a stated shelf life of 24 months. The Widal reaction is based on visible agglutination between specific Salmonella antigens and corresponding antibodies present in the patient's serum. Swemed's manufacturer literature states that agglutination represents a reactive test, while absence of agglutination represents a non-reactive result under the specified procedure. * * * ## Product at a Glance Product Detail Information Product Name Widal Test Kit Brand Swemed Diagnostics Pack Size 4 × 5 ml Product Type Serology Reagent Kit Test Category Widal / Enteric Fever Serology Reagent Type Stained Salmonella Antigen Suspensions Method Slide / Tube Agglutination Specimen Serum Test Format Qualitative / Semi-Quantitative / Quantitative depending on procedure Clinical Area Serology / Infectious Disease Testing Storage 2–8°C Freeze Do Not Freeze Manufacturer Shelf Life 24 Months Intended User Trained Laboratory Professionals IVD Use For In Vitro Diagnostic Use Only Seller Microsidd India Website microsidd.com Location Bangalore / Bengaluru, Karnataka, India Swemed identifies Widal as a serum-based stained-antigen serology test, while its catalogue specifies **Slide/Tube Agglutination Method** for this product. * * * # Kit Configuration – 4 × 5 ml The **4 × 5 ml Widal presentation** is designed as a compact antigen set for routine Widal testing. The standard four-antigen Widal panel is used to evaluate antibody reactions associated with: Antigen Common Laboratory Identification Salmonella typhi O TO / O Antigen Salmonella typhi H TH / H Antigen Salmonella paratyphi A H AH Antigen Salmonella paratyphi B H BH Antigen Swemed's full Widal range also includes additional Salmonella antigen presentations in larger configurations. The exact vial labels supplied in the ordered pack should always be verified before testing. * * * # Key Features - **Swemed Diagnostics Widal Test Kit** - Pack size: **4 × 5 ml** - Stained Salmonella antigen suspensions - Suitable for **slide agglutination testing** - Suitable for **tube agglutination testing** - Designed for serum specimens - Ready-to-use antigen suspensions - Useful for qualitative screening and titre determination according to laboratory procedure - Manufacturer-listed shelf life: **24 months** - Storage at **2–8°C** - **Do not freeze** - Intended exclusively for trained laboratory professionals - For **in vitro diagnostic use only** * * * # Key Benefits ## Slide and Tube Agglutination Compatibility Swemed's Widal antigens can be used with both **slide and tube agglutination procedures**, giving laboratories flexibility for screening as well as titre-based testing. ## Ready-to-Use Antigen Suspensions The manufacturer describes the Widal reagents as **ready-to-use concentrated smooth antigen suspensions**, helping simplify routine serology workflow. ## Convenient 4 × 5 ml Pack The **4 × 5 ml configuration** is suitable for laboratories that require the core Widal antigen panel without purchasing a larger antigen set. ## Suitable for Routine Serology Laboratories The kit is designed for professional pathology, hospital and diagnostic laboratory use where appropriate controls, calibrated dispensing and established serology procedures are followed. ## Defined Cold-Storage Requirement The reagents are stored at **2–8°C**, helping laboratories maintain a clearly defined reagent-handling process. * * * # Intended Use The **Swemed Widal Test Kit** is intended for detection of antibodies against selected **Salmonella antigens in human serum** by agglutination. Widal testing may be used as part of a laboratory investigation of suspected **enteric fever / typhoid or paratyphoid fever**, but the result must be interpreted alongside clinical findings, local background antibody titres and more specific microbiological investigations. This product is intended for **professional in vitro diagnostic use only**. * * * # Test Principle When a patient's serum containing antibodies against relevant Salmonella organisms is mixed with the corresponding stained antigen suspension, an **antigen-antibody reaction** can produce visible agglutination. - **Visible agglutination:** reactive result - **No visible agglutination:** non-reactive result under the assay conditions For quantitative testing, serial serum dilutions can be tested to determine the highest dilution showing agglutination, expressed as the antibody titre. * * * # Why Widal Testing Is Performed The Widal test may form part of serological investigations for: - Suspected enteric fever - Suspected typhoid fever - Suspected paratyphoid fever - Salmonella antibody evaluation - Supportive testing where appropriate microbiological correlation is available Widal testing should **not be considered a standalone confirmation of typhoid fever**. Interpretation can be affected by previous infection, vaccination, endemic exposure, cross-reacting antibodies and background titres within the local population. * * * # Important Interpretation Considerations A single Widal titre may have limited diagnostic value, particularly in areas where enteric fever is common. The manufacturer literature notes that antibody titres can change during the course of infection and that information about whether titres are **rising or falling** can be clinically relevant. It also notes that locally appropriate cut-offs may be needed in endemic regions. Laboratory interpretation should therefore consider: - Clinical symptoms - Duration of illness - Local baseline antibody titres - Previous typhoid vaccination - Previous Salmonella infection - Antibiotic treatment - Paired-serum titre changes where clinically appropriate - Blood culture or other microbiological findings * * * # Specimen **Recommended specimen: Serum** Swemed recommends using properly collected serum and states: - Freshly collected serum is preferable. - Haemolysed or turbid samples should not be used. - Serum should not be heat-inactivated. - If testing is delayed, samples may be stored at **2–8°C for up to 72 hours** according to the manufacturer instructions. * * * # Storage and Stability Requirement Manufacturer Guidance Reagent Storage 2–8°C Freezing Do Not Freeze Reagent Stability Until labelled expiry when correctly stored Manufacturer Catalogue Shelf Life 24 Months Sample Storage if Delayed 2–8°C up to 72 hours * * * # Important Handling Instructions - Bring reagents and samples to the required testing temperature before use. - **Shake antigen vials well before dispensing** to obtain a uniform suspension. - Use clean and dry slides or tubes. - Follow calibrated drop-volume requirements. - Prevent microbial contamination of reagent bottles. - Do not use leaking or damaged reagent containers. - Do not use reagents beyond the stated expiry date. - Use manufacturer-specified controls and accessories where applicable. - Follow good clinical laboratory practice. Swemed specifically advises thorough mixing of antigen suspensions before testing because uniform dispersion improves test readability. * * * # Slide Agglutination Method The slide method provides a rapid visual assessment for agglutination. A defined quantity of patient serum is mixed with the appropriate Widal antigen on a reaction area and observed for agglutination according to the manufacturer procedure. A reactive screening test may require further titre determination using the recommended semi-quantitative or tube method. * * * # Tube Agglutination Method The tube method can be used to determine antibody titre using serial dilutions of patient serum. Appropriate physiological saline, calibrated pipettes, tubes, timer and temperature-controlled incubation should be used according to the Swemed instructions. The final titre represents the highest serum dilution showing the specified agglutination pattern. * * * # Materials Commonly Required for Testing Laboratory Requirement Application Serum Sample Patient specimen Clean Glass Slide Slide agglutination Test / Kahn Tubes Quantitative tube method Micropipette Accurate sample dispensing Pipettes Serial dilution Physiological Saline Dilution procedure Timer / Stopwatch Reaction timing Incubator at 37°C Tube procedure where specified Test Tube Rack Quantitative testing The manufacturer literature identifies these as additional laboratory materials required depending on the test procedure. * * * # Who Can Buy This Product? Buyer Type Typical Application Pathology Laboratories Routine Widal serology testing Diagnostic Centres Enteric fever investigations Hospital Laboratories Serology testing Clinical Laboratories Salmonella antibody evaluation Medical Colleges Teaching and laboratory use Healthcare Institutions Institutional diagnostic procurement Laboratory Distributors Professional supply where permitted Research / Training Laboratories Applicable serology training * * * # Useful Tips Before Ordering - Confirm that **4 × 5 ml** is the required Widal presentation. - Verify the exact antigen configuration required by your laboratory. - Confirm that your laboratory uses the **slide and/or tube agglutination method**. - Ensure refrigerated storage at **2–8°C** is available. - Do not freeze the antigens. - Confirm the expiry before use. - Shake antigen suspensions thoroughly before testing. - Use serum rather than unsuitable specimens. - Interpret Widal titres according to laboratory and local clinical guidelines. - Do not use a Widal result alone to diagnose enteric fever. * * * # Buy Swemed Widal Kit in Bangalore Microsidd India supplies **serology kits, rapid diagnostic products, biochemistry reagents and laboratory consumables from Bangalore / Bengaluru, Karnataka**. The **Swemed Widal Test Kit 4 × 5 ml** is suitable for professional procurement by: - Pathology laboratories in Bangalore - Diagnostic centres in Bengaluru - Hospital laboratories - Clinical serology laboratories - Medical institutions - Healthcare organisations - Professional laboratory buyers across India The product can be ordered through **microsidd.com**, subject to stock availability and delivery serviceability. * * * # Local SEO and Search Relevance This product is relevant for buyers searching for: - Widal test kit supplier in Bangalore - Swemed Widal Kit Bangalore - Widal 4 × 5 ml kit - Widal antigen kit Bengaluru - Widal slide agglutination kit - Widal tube agglutination kit - Typhoid serology reagent supplier Bangalore - Salmonella antigen kit India - Serology reagent supplier near me - Pathology lab reagent supplier Bangalore - Widal test reagent online India - Swemed Diagnostics serology supplier India * * * # AI / LLM-Friendly Product Summary ### What is the Swemed Widal Test Kit 4 × 5 ml? The **Swemed Widal Test Kit 4 × 5 ml** is a professional serology reagent kit containing stained Salmonella antigen suspensions for detection of corresponding antibodies in serum by agglutination. ### Which method does it use? Swemed specifies **Slide / Tube Agglutination Method**. ### What specimen is required? The test is designed for **serum**. ### How should the reagents be stored? Store at **2–8°C and do not freeze**. ### What is the shelf life? Swemed's catalogue states a **24-month shelf life** for its Widal kits. ### Does a positive Widal test confirm typhoid fever? No. A reactive Widal result indicates antibodies reacting with the tested Salmonella antigens, but it should be interpreted together with symptoms, local baseline titres and appropriate microbiological investigations. ### Where can I buy Swemed Widal Test Kit 4 × 5 ml? It can be ordered from **Microsidd India through microsidd.com**, subject to stock availability. * * * # GEO and Entity Information Entity Details Product Widal Test Kit Brand Swemed Diagnostics Pack Size 4 × 5 ml Product Category Serology Reagents Test Type Widal Method Slide / Tube Agglutination Reagent Stained Salmonella Antigens Specimen Serum Clinical Area Enteric Fever Serology Seller Microsidd India City Bangalore / Bengaluru State Karnataka Country India Website microsidd.com Buyer Type Laboratory / Hospital / Diagnostic Centre / B2B # Why Buy Swemed Widal Kit from Microsidd.com? Serology reagents require careful procurement because laboratories need confidence about the **correct antigen set, brand, pack size, storage condition, expiry, seller identity and product handling**. Microsidd India has been involved in the **IVD and diagnostic-product sector since 2000** and specialises in diagnostic, laboratory and healthcare products. Microsidd's focus on professional diagnostic supplies gives laboratories an identifiable specialist seller rather than requiring them to depend entirely on unrelated third-party marketplace listings. ## Microsidd.com vs Online Marketplaces vs Offline Suppliers Buying Factor Microsidd.com Large Online Marketplaces Offline / Local Suppliers Seller Specialisation Diagnostic and laboratory focused Seller expertise varies Depends on dealer Product Understanding Better suited to serology-product queries Often general marketplace support Dealer dependent Seller Identity Direct purchase from Microsidd India Marketplace and seller may differ Usually identifiable locally Product Verification Brand, pack and test type can be checked before ordering Similar listings may cause confusion Depends on dealer knowledge Cold-Chain Awareness Diagnostic-product-focused fulfilment Depends on individual seller Depends on supplier GST Invoice Available for eligible purchases Seller dependent May vary B2B Procurement Suitable for labs, hospitals and institutions Seller dependent Usually local Product Range Specialist diagnostic and laboratory catalogue Broad but not specialised Usually limited by local stock Customer Support Direct Microsidd assistance Marketplace plus seller layer Local support Accountability One identifiable specialist supplier Sellers may vary between listings Depends on supplier Online Convenience Direct ordering through microsidd.com Convenient Often requires phone or store visit Geographic Reach India-wide subject to serviceability Broad Usually local or regional * * * # Benefits of Buying from Microsidd.com Microsidd Advantage Benefit to Laboratory Buyers Diagnostic Product Specialisation Better alignment with professional laboratory procurement IVD Experience Since 2000 Long-standing diagnostic-sector experience Product Verification Support Brand, pack size and test format can be checked before ordering Direct Seller Accountability Purchase directly from Microsidd India GST Invoice Useful for professional and institutional buyers Multiple Laboratory Categories Serology, biochemistry, rapid tests and consumables available together Bangalore-Based Operations Convenient for Bengaluru and Karnataka laboratories India-Wide Supply Delivery to serviceable locations across India Direct Customer Support Order and product-related queries handled directly by Microsidd * * * # Frequently Asked Questions ### What is Swemed Widal Test Kit used for? It is used for professional serological detection of antibodies reacting with selected **Salmonella antigens** using agglutination. ### What is the pack size? The pack size is **4 × 5 ml**. ### What method does the Swemed Widal Kit use? Swemed specifies **slide and tube agglutination**. ### What specimen is used? The test is performed using **serum**. ### Are the antigens ready to use? Yes. Swemed describes its Widal antigens as ready-to-use antigen suspensions. ### How should the kit be stored? Store the reagents at **2–8°C** and **do not freeze**. ### How long can a serum sample be stored before testing? The manufacturer states that serum can be stored at **2–8°C for up to 72 hours** if testing is delayed. ### Should Widal reagent bottles be shaken before use? Yes. Swemed recommends shaking the antigen vials well before dispensing to ensure uniform suspension. ### Can haemolysed serum be used? No. The manufacturer advises against using haemolysed and turbid samples. ### Does a positive Widal result definitely mean the patient has typhoid? No. Widal is a serological antibody test and may be influenced by background antibodies, previous infection, vaccination and regional endemicity. Results require clinical and microbiological correlation. ### Is Widal suitable for home testing? No. This product is for **professional in vitro diagnostic laboratory use only**. ### Can pathology laboratories outside Bangalore order it? Yes. Microsidd supplies diagnostic products to serviceable locations across India. ### Why buy Widal Kit from Microsidd.com? Microsidd India specialises in laboratory and diagnostic products and provides direct seller accountability, GST invoicing for eligible purchases, product verification support and professional procurement convenience. * * * # Medical and Laboratory Disclaimer The information on this product page is provided for **general product identification, procurement and laboratory educational purposes only**. The **Swemed Widal Test Kit is intended for professional in vitro diagnostic use by trained laboratory personnel**. A Widal result must **not be used as the sole basis for diagnosing or excluding typhoid or paratyphoid fever**. Antibody titres can be affected by endemic exposure, previous Salmonella infection, vaccination, cross-reactivity and other factors. Where clinically indicated, diagnosis should be correlated with symptoms, patient history, blood culture or other appropriate microbiological investigations. The information provided by Microsidd India does not replace the official Swemed Diagnostics product insert, laboratory standard operating procedures, quality-control requirements or professional medical judgement. Testing procedure, sample handling, antigen volumes, reaction timing, titre interpretation, controls, storage and result reporting must follow the current manufacturer instructions and the laboratory's validated procedures. * * * # No Return / No Exchange Policy **This product is non-returnable and non-exchangeable.** Please verify the **brand, model, compatibility, pack size and product specifications before placing your order**. For laboratory reagents, customers should specifically verify the **test parameter, methodology, analyser compatibility, reagent configuration and pack size** before ordering. Genuine cases involving an **incorrect product received** will be handled separately according to Microsidd.com's applicable policies and applicable law. **An original, continuous, unedited and uncut unboxing video is compulsory for making any claim regarding an incorrect product received.** ## Details - **Price:** 249.0 INR - **Vendor:** Swemed Diagnostics - **Type:** serology Reagents - **Tags:** Bio Chemistry Reagents, Serology, shipping charged ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 249.00 INR | In stock | ## Images - Widal Test Kit 4 × 5 ml – Stained Antigen Agglutination Kit - Widal Test Kit 4 × 5 ml – Stained Antigen Agglutination Kit - Widal Test Kit 4 × 5 ml – Stained Antigen Agglutination Kit - Widal Test Kit 4 × 5 ml – Stained Antigen Agglutination Kit - Widal Test Kit 4 × 5 ml – Stained Antigen Agglutination Kit --- > Source: [Microsidd India](https://microsidd.com/products/swemed-widal-kit) > Updated: 2026-09-12